Siemens Building Technologies, Inc.

Landis & Staefa, Inc.

Christopher Wojtowicz

Donald E Charles

Kenneth F Wolfinger

A thermostat control having improved user controls wherein an analog version contains a binary coded switch for selectively setting a setpoint temperature. The binary coded switch is configured to have discrete positions corresponding to a plurality of setpoint temperature settings. It contains, among other things, a resistor network configured to produce a setpoint signal indicative of the binary coded switch position and a setpoint adjust switch for setting the binary coded switch position. Also, digital version having a man-machine interface port, wherein point information from a controller can be viewed and modified with the thermostat control device controls when a hardware passkey is inserted into the man-machine interface port.

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Mt. Prospect, IL, United States of America

Christopher Wojtowicz